Disk pulverizer



noch 25, 1932. E c, SANDEEN 1,884,273

DISK PULVERIZEH Filed April 2, 1930 2 Sheets-Sheet 1 Oct. 25, 1932. C,SANDEEN 1,884,273

DISK PULIVERIZER Fiied April 2. 1930 2 sheets-snee; `2

Patented Oct. 25, 1932 ERNEST c. seminari, or sr.rAUL, MINNESOTA- nrsxPULVERIZER e Application filed April 2,.193.` Serial No; 440,955.

This inventionrelates to a pulverizer or harrow and particularly to apulverirzer of the disk type. It is desirable insuch a machine to havethe same constructed so that the ground will be thoroughly worked over`and pulverized by the disks, to have the disks mounted so that they willoperate efliciently and so that they can be easily'l removed if repairsor change are necessary.V It is also desirable'to have the machinesimple in construction and arranged so that the disks can be adjusted asto height.

It is an object of this invention therefore Y to provide a diskpulverizer having forward f and rear rows of disks disposedsubstantiallyin the same horizontal plane, said disks being concavo-convex in form,the disks in the front row inclining longitudinally in one direction andthe disks in the rear row inclining longitudinally in the oppositedirection and being oppositely disposed, the rear disks also preferably.beingl staggered vwith relation to the front disks.

It is a further object of the invention tol provide a disk pulverizercomprising a front row of concave-convex disks, the disks at one side ofthe center of the machine facing one way and the disks `at the otherside of the center facing in the opposite direction, said disks beinglongitudinally inclined so that their rear sides extend away from thecenter, said machine also having a rear row of 'similar disks, the disksat each side of the center facing in opposite directions, each of saidlatter disks, however, being inclined oppositely to the correspondingfront disk and facing in the opposite direction.

It is also an object of the invention to provide such a structure as setforth in the preceding paragraph, a small disk being used It is stillanother object of the invention to provide a simple and ei'cientstructure for` revolubly mounting a disk onfeach of said brackets.

These and other objects and advantages of the vinvention will be fullyset forth in the following description made in connection with theaccompanying drawings, in which like reference characters refer tosimilar parts throughout the severa-l views, and in which Fig. 1 is atop plan view of the machine; Fig. 2 is a view in side elevationthereof; Fig. 3 is a vertical section taken on line 3 3 of Fig. 1 asindicated by the arrows;

Fig.4 is a horizontal section taken on line 4-4 of Fig. 3 as indicatedby the arrows; I

Fig. 5 is a partial Vertical section taken substantially on line 5--5 ofFig. 4, and

Fig. 6 is a view similar to Fig. 4 showing a modification.

Referring to the drawings, a machine is` shown comprising the sidesupporting wheels 10. which are journaled the ends 11a of an axle 11',said axle having the portions 11?) adjacent its end bent substantiallyyat right angles so that portions 11a are in effect crankarms. rlhewheels 10 are retained on the ends of portions 11a by any suitable capmembers 12 secured to the ends of the axle and by collar members 13 alsosecured to or formed on members 11a at the inner sides of the wheels. Aframe 14 is provided having end members 14a to which are secured thebars 15 in which axle 11 is journaled. Each member 14a has a rearportion extending substantially parallel to the wheels 10 and a forwardportion sloping inwardly slightly toward the center of the machine. Themem'- bers 14a are connected byy spaced longitudinal members 14?)rigidly secured to members 14a at their ends. The members14b aredisposed over and bolted lto a tongue member 16 disposed centrally offrame 14 and extending forward therefrom. Forwardly and rearwardlyextending bars 140 'are secured at their ends `tomembers 14?) andextend` therebetween. Crankshaft 11 is also jour- Wheels `10 Vhave hubs10a in to receive a rod 54 which extends through lall of the brackets,said rod 54 being secured to bar 21, the eyelet bolts 55 embracing rod54 between the ends of the portions 53a and passing through the'verticalflange of bar 21, said bolt 55 having a nut thereon at the outer side ofsaid flange. Bracket 53 is provided with a hub 53?) similar to the hub220, said hub, however, receiving a bushing 56. While bushing 56 may bemade of various materials, it preferably is made of wood. The bearingbracket 57 is similar to bracket except that it is of uniform diameterin the portion disposed in hub 535, said bearing bracket rotating in hub53?) and bushing 56.

In operation the `machine will be drawn forwardly by a tractor or teamand disks 26 will roll in their bearings in brackets 22, the disksmoving in the earth at their lower portions as shown in Fig. 2. Thedepths to which the disks penetrate can be regulated n by moving lever40. This lever rotates axle 11 and raises kthe frame 14 and the disks byrotating the axle about the portions 11a. The disks can be raisedentirely out of the ground as when itis desired to transport the machineand theycan be let into the ground different distances. The spring 44assists in the movement of lever 40. The tension of this spring can beadjusted somewhat by adjustment of bolt 46. The lever 40 is held in thevarious positions by pawl 41 engaging segment 43 and the frame 14 isthus held in various heights. As the machine moves forwardly the disks26 in the front row will engage the earth and cut it up and since saiddisks areinclined forwardly and rearwardly, the dirt will be thrownoutwardly from the center of the machine at both sides thereof.` Thisdirt that is thrown outwardly will be engaged by the rear disks 26 whichmove in a line passing substantially midway between thefront disks andthe dirt will be again thrown inwardly. The small disk 51`will move overthe path between the two central disks of the front row so that theground between these disks will be cut up. The disks are held downyieldingly in the ground by the springs 34 and can'of course yieldupwardly to pass over some obstruction, such as a stone.` Whenr theframe 14 is elevated to lift the disks 26 from the ground, rod 31 willdrop until pin 36 engages washer 35 and the disks will then be suspendedfrom rod 31 and pins 36. The disks will be kept clean by Scrapers 39disposed at the inner sides thereof. Should it be desired to remove oneof the disks, this could be done by removing several of the bolts 24 andbearing brackets 23. The portions 22a can be moved outwardly ordownwardly suliiciently to disengage them from the brackets 226.

In the modification shown in Fig. 6 it would be necessary to withdrawthe rod 54 from the bracket portion 53al in order to remove the bracket.The disks are held accurately in position and yet turn freelyin the hubsof thesufpporting brackets; It will be obvious that a disk can be easilyand quickly` removed fromits bracket.

i From the abovefdescription it is .seen that n applicant has provided asimple and `efficient soil pulverizer or .diskharrow and one in' Itwill, of course, be understood that vari'-l c ouschanges may bemadeinthe form, details,

proportions and arrangement of the parts without departing fromthescopeof applicantsinvention, which, generally stated, consists in a devicecapable of `carrying out the objects above ,setA forth, in the novelvparts and ,combinations of parts disclosed and'delined in the appendedclaims.

What is claimed is,:- v f 1. Agfarm implement, comprising a frame,

a pair of crank axle members mounted thereon, wheels .carried by saidaxle members, manual adjusting means controlling said axle members tovary the height of said wheels with respect to said frame, a pluralityof aligned discoid soil working members mounted forwardly of said axleand resiliently connected to said frame for vertical movement withrespect thereto, a second aligned row of discoid soil working memberssimilarly connected to said frame rearwardly of said axle and oppositelydisposedv with respect to said forward row of aligned discoid soilworking members.

.2; A disk pulverizer having in combination a frame, a front row ofconcavo-convex disks mounted in said frame, the disks at opposite sidesof the center of said frame having their concave sides directedrespectively outwardl a second rowV of disks in the rear of said rstmentioned disks, the disks at either side of the center of said frame insaid rear row having their concave sides directed inwardly respectively,the disks in said front row inclining outwardly toward their rear edgesand the disks in said rear row inclinmg inwardly toward their rearedges, and a smaller concavo-convex disk disposed between the twocentral disks of said rear row and in the rear of the two central disksof said front row.

3. A disk pulverizer having in combination a frame, a disk-.carryingbracket mounted in said frame, having a hub portion with a boretherethrough, a concavo-convex disk,

a bearing bracket secured to the convex side of said disk and having aprojecting bearing portlon, a washer at the concave side of said disk, aheaded and nutted bolt passing through said bracket and washer andhaving a portion angular in cross section fitting a vno recess ofVsimilar cross section in said bearing bracket, said bearing portion ofsaid bracket being ournaled in the bore of said hub, and said hub havinga reduced exterior threaded endportion and a cup-like cap screwed ontosaid end portion. A i Y v4; A disk pulverizer having in combination,- aframe, a. bar extending horizontally transversely of said frame, abracket secured to said bar and svvingable about a horizontal axisextending close to said bar, said bracket extending from said bar andhaving `a hub portion at its outer end, a disk journaled in said hubportion, a bar disposed above said hub portion extending transverse- 1yof said frame, a rod secured to said hub portion and extending throughsaid last mentioned bar and a compression spring between said hubportion and last mentioned bar, said hub portion ha-ving projectingapertured ears at its top portion, said rod having an eyelet disposedbetween said ears, and a pivot member extending through said ears andeyelet and pivotally connecting said rod and hub portion.

In testimony whereof I affix my signature.

ERNEST C. SANDEEN.

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